from tkinter import*
print('Введите значение x:')
x=int(input())
print('Введите значение y:')
y=int(input())
print('Введите значение N:')
N=int(input())
if N==0 and x>=0 and x<=500 and y>=0 and y<=500:
    pass
else:
    if N>0 and 0*N+x>=0 and 0*N+y>=0 and 20*N+x<=500 and 20*N+y<=500:
      pass
    else:
      if N<0 and 30*N+x>=0 and 30*N+y>=0 and 0*N+x<=500 and 0*N+y<=500:
        pass
      else:
        print('Размер фигуры превышает максимально допустимый размер поля')
        exit()

coords=[0,0, 10,0, 10,10, 20,10, 20,20, 10,20, 10,30, 0,30]

root=Tk()
root.title("ИТ марафафон")
root.geometry("500x500")

canvas=Canvas(bg="white", width=500, height=500)
canvas.pack(anchor=CENTER, expand=1)
canvas.create_polygon(coords[0]*N+x, coords[1]*N+y,
                      coords[2]*N+x, coords[3]*N+y,
                      coords[4]*N+x, coords[5]*N+y,
                      coords[6]*N+x, coords[7]*N+y,
                      coords[8]*N+x, coords[9]*N+y,
                      coords[10]*N+x, coords[11]*N+y,
                      coords[12]*N+x, coords[13]*N+y,
                      coords[14]*N+x, coords[15]*N+y)
root.mainloop()
